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TIDA-03050

Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design

Design files

TIDA-03050

Design files

Overview

This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current sensors. Obtaining a good accuracy over three decades (mA to A, 1 A to 100 A, and 100 A to 1000 A) is quite challenging due to large amounts of noise in the system. This design solves this problem by using a high-resolution analog-to-digital converter (ADC) and high-accuracy current shunt monitors from TI.

Features
  • Full-scale accuracy of:
    • 0.02% full-scale range (FSR) for < 20A and < 0.05% FSR for 20A to 1500A at 25°C
    • 0.1% FSR for < 20A and 0.25% FSR for 20A to 1500A at 50°C
  • Suitable for 50mA to 1500A range current measurement; configurable to varied current spans
  • High-side sensing and low-side sensing
  • Supports bi-directional current
  • Bi-directional current measurement:  -1500A to +1500A
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Design guide — TIDA-03050
TIDUD33A.PDF (1202 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-03050
TIDRSW4.PDF (104 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-03050
TIDRSW3.PDF (54 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

download CAD/CAE symbol — TIDA-03050
TIDRSW6.ZIP (477 KB)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDA-03050
TIDCDV8.ZIP (420 KB)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDA-03050
TIDRSW5.PDF (512 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-03050
TIDRSW2.PDF (302 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Digital temperature sensors

LMT01-Q1 — Automotive Grade, 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface

Data sheet: PDF | HTML
Analog current-sense amplifiers

INA240-Q1 — AEC-Q100, -4 to 80V, bi-directional, ultra-precise current sense amplifier w/ enhanced pwm rejection

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA320-Q1 — Automotive qualified, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Low-power MCUs

MSP430F5529 — 25 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

Data sheet: PDF | HTML
Precision ADCs

ADS1259-Q1 — Automotive, 24-bit, 14.4kSPS, 1-ch delta-sigma ADC w/ low-drift Vref for high-dynamic range systems

Data sheet: PDF
Linear & low-dropout (LDO) regulators

TPS709-Q1 — Automotive 150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection

Data sheet: PDF | HTML

Start development

Hardware development

Development kit

MSP-EXP430F5529LP — MSP430F5529 LaunchPad™ development kit for USB

This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current (...)
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
CC2592EMK-RD — Standalone 2.4GHz Range Extender Reference Design TIDA-00794 — Thermal Protection Reference Design of IGBT Modules for HEV/EV Traction Inverters TIDA-01451 — Power Switching Reference Design for Set Top Box TIDA-01628 — Reference design for automotive cluster driver notification functions TIDA-020012 — Automotive pixelated dome light reference design for interior lighting TIDA-020026 — Stepper-motor driver reference design for adaptive front lights and dynamic headlight leveling TIDA-03029 — Optimizing Efficiency by Handshaking Adjustable Adapters and Battery Chargers Reference Design TIDA-03050 — Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design TIDA-060025 — Reference design maximizing transimpedance bandwidth for LIDAR and time-of-flight (ToF) applications TIDM-02004 — Gesture-based capacitive touch speaker interface reference design TIDM-3DGRAPHICS-QVGA — QVGA 3-D Graphics on Ultra Low Power Microcontrollers TIPD188 — High-Resolution, Low-Drift, Precision Weigh-Scale Reference Design with AC Bridge Excitation
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MSP-EXP430F5529LP — MSP430F5529 LaunchPad™ development kit for USB

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Hardware development
Reference design
CC2592EMK-RD — Standalone 2.4GHz Range Extender Reference Design TIDA-00794 — Thermal Protection Reference Design of IGBT Modules for HEV/EV Traction Inverters TIDA-01451 — Power Switching Reference Design for Set Top Box TIDA-01628 — Reference design for automotive cluster driver notification functions TIDA-020012 — Automotive pixelated dome light reference design for interior lighting TIDA-020026 — Stepper-motor driver reference design for adaptive front lights and dynamic headlight leveling TIDA-03029 — Optimizing Efficiency by Handshaking Adjustable Adapters and Battery Chargers Reference Design TIDA-03050 — Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design TIDA-060025 — Reference design maximizing transimpedance bandwidth for LIDAR and time-of-flight (ToF) applications TIDM-02004 — Gesture-based capacitive touch speaker interface reference design TIDM-3DGRAPHICS-QVGA — QVGA 3-D Graphics on Ultra Low Power Microcontrollers TIPD188 — High-Resolution, Low-Drift, Precision Weigh-Scale Reference Design with AC Bridge Excitation
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Technical documentation

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* Design guide Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design (Rev. A) Dec 18, 2017

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